2020
Reinforcement Learning during Adolescence in Rats
Afshar N, Keip AJ, Taylor JR, Lee D, Groman SM. Reinforcement Learning during Adolescence in Rats. Journal Of Neuroscience 2020, 40: 5857-5870. PMID: 32601244, PMCID: PMC7380962, DOI: 10.1523/jneurosci.0910-20.2020.Peer-Reviewed Original ResearchConceptsNovel behavioral protocolReversal-learning performanceAdaptive choice behaviorBehavioral protocolFemale Long-Evans ratsReversal performanceChoice behaviorLong-Evans ratsAdolescent brain functionAge-related improvementsReinforcement-learning mechanismsReversal-learning taskReversal-learning paradigmDecision-making paradigmReinforcement learning mechanismAdolescent ratsLongitudinal designAge-related changesNeurodevelopmental mechanismsAdolescencePositive outcomesBrain functionFunction of circuitsPostnatal day 30Adulthood
2014
Primate Phencyclidine Model of Schizophrenia: Sex-Specific Effects on Cognition, Brain Derived Neurotrophic Factor, Spine Synapses, and Dopamine Turnover in Prefrontal Cortex
Elsworth JD, Groman SM, Jentsch JD, Leranth C, Redmond DE, Kim JD, Diano S, Roth RH. Primate Phencyclidine Model of Schizophrenia: Sex-Specific Effects on Cognition, Brain Derived Neurotrophic Factor, Spine Synapses, and Dopamine Turnover in Prefrontal Cortex. The International Journal Of Neuropsychopharmacology 2014, 18: pyu048. PMID: 25522392, PMCID: PMC4438537, DOI: 10.1093/ijnp/pyu048.Peer-Reviewed Original ResearchConceptsSpine synapse numberDorsolateral prefrontal cortexDopamine turnoverPhencyclidine treatmentSpine synapsesSynapse numberCognitive deficitsPrefrontal cortexPhencyclidine modelMale monkeysJuvenile monkeysSchizophrenia-related cognitive deficitsDendritic spine synapsesIncidence of schizophreniaAdult male monkeysSex-specific effectsMessenger RNABDNF expressionNeurotrophic factorNovel treatmentsCombined groupAdult nonhumanCore symptomsCortexNonhuman primates
2007
Dimensions of Impulsivity Are Associated with Poor Spatial Working Memory Performance in Monkeys
James AS, Groman SM, Seu E, Jorgensen M, Fairbanks LA, Jentsch JD. Dimensions of Impulsivity Are Associated with Poor Spatial Working Memory Performance in Monkeys. Journal Of Neuroscience 2007, 27: 14358-14364. PMID: 18160643, PMCID: PMC6673444, DOI: 10.1523/jneurosci.4508-07.2007.Peer-Reviewed Original ResearchConceptsDimensions of impulsivityMemory performanceNonsocial stimuliResponse taskImpulsive behaviorDRD4 genotypeAttention-deficit/hyperactivity disorderDeficit/hyperactivity disorderSpatial Working Memory PerformanceHigh impulsive animalsWorking Memory PerformanceDelayed response taskDimensions of temperamentLow impulsive subjectsDRD4 allelesNeurocognitive endophenotypesDopamine D4 receptor geneHyperactivity disorderD4 receptor geneDimensional phenotypesCorrect responsesDelay versionImpulsivityCeiling levelImpulsive approach